Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: Initially 150. Reduced by 20%. How it is to be reduced to become 108?

 Option A: 10%

 Option B: 20%

 Option C: 30%

 Option D: 40%

 Option E: 50%

Option A